list comprehension (searching for onliners)

[Gerardo Herzig]

Hi all: I have this list thing as a result of a db.query: (short version)
result = [{'service_id' : 1, 'value': 10},
                {'service_id': 2, 'value': 5},
                {'service_id': 1, 'value': 15},
                {'service_id': 2, 'value': 15},
             ]

and so on...what i need to do is some list comprehension that returns me 
something like

result = [
                {
                    'service_id' : 1, 'values': [ {'value': 10}, 
{'value': 15}]
                 },
                {
              'service_id' : 2, 'values': [ {'value': 5}, {'value': 15}]
                }
               

My problem now is i cant avoid have "repeteated" entries, lets say, in 
this particular case, 2 entries for "service_id = 1", and other 2 for 
"service_id =2".
Ill keeping blew off my hair and drinking more cofee while searching for 
this damn onliner im looking for.

Thanks dudes.
Gerardo